Change Default Local IP in 3CX?

Ive got a problem in that the machine that has 3CX on has got 2 Network adaptors, and for some reason 3CX is picking up the Default Local IP as the wrong adaptor, Ive tried setting the adaptor i dont want it to use and calling it ZZZZZZ and leaving the one i want it to use set to Local Area Connection but its still picking up the wrong one.

In Settings > Network > Stun Tab ive set the IP to the correct adaptor but its still picking up the wrong one.

The reason i need this is that its using the wrong adaptor to try and register the VOIP Provider and its failing as there is no net on that adaptor. Incoming connections are fine its just the outgoing.